WIP refactor representation editing into geometry module. See #1222. Some new functionality as a result:

- Representations can now be added to any context, even invalid ones, non-subcontext, or missing target views
 - Switching representations now change all linked data objects

src/ifcblenderexport/blenderbim/bim/module/geometry/remove_representation.py

@@ -0,0 +1,9 @@
+class Usecase:
+    def __init__(self, file, settings=None):
+        self.file = file
+        self.settings = {"representation": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        self.file.remove(self.settings["representation"])